Lithographs



prima aan.

AURY GATES GOES, OF WORCESTER, MASSACHUSETTS.

Letters Patent No. 102,371, dated April 26, 1870.

IMPROVEMENT IN PIPE-TONGS.

The Schedule referred to in these Letters Patent and making part of thesame.

To all to whom these presents shall come:

Be it known that I, AURY GATES GOES, ofthe city and county oflVorcester, and Commonwealth of Massachusetts, have made an invention ofce1-'tain new and useful Improvements in Pipe-Tongs, so called; and dohereby declare the-following be be a full, clear, and exact descriptionthereof, due reference being had to the accompanyingdrawings making partof-this specification, and in Which- Figure l is an elevation Figure 2,a plan; and

Figure 3, a horizontal section of a pair of pipe-tongs embodying uiyimprovements.

Figure 4 is a transverse sectionof the same, taken through the fulcrumof the movable latch to be hei'einafter explained.

The purpose of the invention herein described is to reduce the cost ofan instrument now become of coninion use in the mechanic arts, as wellas to produce one possessing advantages in several respects over thoseheretofore made, such'invention consisting in the employment of a hookedstationary or primary jaw formed with a long shank, substantially afterthe manner of uiaiiy screw-wrenches now in daily use, a movable jaw orlatch being pivoted to a clasp or yoke sliding freelynpon the saidshank, and moved to and fro thereon, with respect to the primary jaw, bymeans of a nut enveloping a male screw out upon suoli shank, the freeend of the latch being adjusted to the varying diameters to which theinstrument is adapted by. the agency of a rod or bar, one end of whichis pivot-ed to such latch, and whose opposite encircles and slidesfreely upon the shank of the primary jaw in unison with the traversioiisof the clasp before mentioned, as carrying the movable jaw or latch, thewhole being arranged as hereinafter explained.

Referring to the drawings accompanying this specication, and whichillustrate my present invention,

the reader will see lthat A denotes along bar or shank substantiallyrectangularin ci'oss-section, and formed at one end witha curved orhooked projection or abutment B for overlapping a pipe or othercylindrical object.

The central port-ion of this bar A, for about onethird its .entirelength, is provided upon its periphery with an annular circninscribingmale screw, C, ofV

metal, overlapping the outer face of the latchic, and pivotcd tlieretoator ucar its center, as shown at g, the rear or opposite extremity ofthis rod f being formed into an eye, 7i., to embrace and slide freelyupon the shank A.

The purpose of this rod or handle f is to effect such elevations of thelatch or depart-ure of the same from the'barof the instrument as toinclose and clasp at the proper point the pipe or object to he graspedand revolved.

I am aware that heretofore pipo-tongs have been produced in divers ways,and with a stationary jaw or is passed a cylindrical milled nut orsleeve, D,suc,h nut being groovcd upon its periphery, as shown at E, forreception of a lateral lip, al, making part ot'a clasp or slider, b,which loosely encompasses the bar of the instrument or.V t-lie malescrew' out thereupon. t

It will be apparent that rotations of the :nut l upon the screw c willcanse traversions of' both nut and slider upon such screw, and toward oraway from, .thel hooked jaw B, according to the direction in vwhich thesaid nut-is revolved. v

Disposed between the two arms or projections of the clasp or slider li,and fnlcrnineil attsre: '.enil thereto, as shown at c, is a movable jawor latch, c, the base oi' this latch being stepped within the body oftheslider in order to create a solid and unyielding abutment foi' the sameto resist thrust andftorsiou upon the instrument, it beingr understoodthat .tlie said latch e is disposed upon the sideoi' the bar A,

.from which the departure of the hook B takes ,'place,

thus bringing the hook and latcli'in alignment with each other. Y i

F, in the drawings, represents a rod or strip only of the rod f in myvinvention is necessary `to effect the longest range of the latch ormovable jawc, lthus in a simple and very ii'iexpensive manner doingawa-y with the objections before stated. e

Another advantage peculiar to niy arrangement of parts, and whichdistinguishes it from any heretofore in use, is seen in the fact thatthe instrument may be adjust-ed and used wit-li one hand only, while theuse of the nut al as a motor for the clasp 1),.and

the latch or jaw c, allows of rapid and extended I claim- 1. 'lhemovable jaw or latchr e, in combination with a rod or bar j; having oneof its ends pivoted or sliderb, and adjusted by the rod or handle f, theto the jaw, and t-he other end arranged to slide upon slide being causedto traverse the bar by means the bar of the instrument, whereby said jawor latch of the nut; D, to which it yis swiveled, and the whole can beadjusted substantially as described. operating as before set; forth.

The improved pipe-tongs before described, the AURY GATES GOES. sameconsisting of the primary jaw B and bar A Witnesses: with its screw O,and the latch or movable jaw e, the W. W..R1CE, latter being fulcrumedto or stepped withinthe clasp J oNAs PHILLIPS.

